VingoBow Natural BLACK Mongolia Horsehair Carbon Fiber Cello Bow DEEP and POWERFUL Tone Nice Design 4/4 Size Black Color Art No.100CB BLACK HORSEHAIR - We use natural black Mongolian horsehair with great resilience, easier to rosin. Black horsehair is thicker than white hair, you will get louder and wild tone surprisingly. ADVANCED PERFORMANCE - The bow was made by old experienced bow-maker. It will provide you loud and wild tone and is recommended for advanced players. QUALITY CARBON FIBER - The stick is stronger and more durable than Pernambuco, with well bounce and great flexibility. It is a lightweight bow also, close to 80 grams. Approx. 71.5cm including the screw. Easy to play. PERFECT BALANCE POINT - Balance point is very important for a bow. Our maker always adjust it several times to ensure it is in the right range. Great balance point makes the bow easier to control. CAREFULY HANDMADE - The bow is totally made through traditional handcraft skills. Straight stick, clean work, ready to play.